8th Grade

Speed and Acceleration Graphs
http://physicalsciencecottrell.wikispaces.com/Speed+and+Acceleration+Graph
Motion Graphs 1 & 2
http://physicalsciencecottrell.wikispaces.com/Motion+Graphs


Unbalances and Balanced Forces
Figure 3 on page 376 & 7
Include all words for full credit.

Combining Force Vectors
Figure 2 on page 375
Include all words for full credit.


3/23 & 24
P. 377 Questions
Copy questions and answer.

End of Third Quarter End of Third Quarter End of Third Quarter


KE - Do Now
Put the values in the kinetic energy formula and then solve. No filled out formulas = no credit.
Kinetic Energy = ½ x mass x speed2
1. What is the kinetic energy of each player?
a) A 50 kg player running at 2 m/s
b) A 100 kg player running at 1 m/s
2. Which has more effect on KE, mass or speed? Why?


3/21 & 22
P. 363 Questions
Copy questions and answer.

KE vs PE - Do Now
Draw a pendulum where its kinetic energy is highest. Label this.
Draw a pendulum where its kinetic energy is lowest. Label this.
Hint Page 362



3/20
Math Skills p. 359
Copy the Exponent part
Copy the example problem
Write the practice problem
Calculate the solution

Figure Review 1
1. Explain the point of fig. 1 on page 339
2. Explain the point of fig. 2 on page 340
3. Explain the point of fig. 3 on page 341
4. Explain the point of fig. 5 on page 346
5. Explain the point of fig. 7 on page 352
6. Explain the point of fig. 8 on page 354
7. Explain the difference between speed and acceleration.
8. Explain how to calculate acceleration.



Kinetic Energy (Copy and Complete p. 358-9)
1 ...... is done when an object is moved a distance.
2 The ability to do work or cause change is ......
3 When one object does work on another object, ......... is transferred to the second object.
4 The energy an object has due to its motion is ......
5 The kinetic energy an object has depends on both its...
6 A heavy bowling ball takes more energy to roll than a light bowling ball.
7 When rolling at the same speed, a heavy bowling ball has more .......... than a lighter bowling ball.
8 For identical bowling balls, the faster rolling ball has more ......
9 (Formula) Kinetic energy =
10 Doubling the mass of an object will ...... its kinetic energy.
11 Doubling the speed of an object will ...... its kinetic energy.


Potential Energy (p. 360 Copy and Complete)
1 Lifting up a book or compressing a spring transfers ...... to them.
2 Stored energy that results from the position of shape is...
3 Potential energy related to an object’s height is...
4 Energy that depends on an object’s weight and height is its...
5 Gravitational Potential Energy =
6 Energy in objects due to compression or stretching is...
7 Mechanical energy is...
8 Mechanical energy =
9 An object that rises and falls experiences...
10 A continuous transformation between kinetic and potential energy takes place in a...
11 The law of conservation of energy states...
12 Energy transforms and is not..


Copy figure 14 on page 362

Copy figure 11 on page 360

Copy figure 10 on page 359


P. 347 Questions
Write the questions and correct complete them.

Copy the figure on page 346 & 347




Mysteries of Matter 2
Questions

Energy Bill Nye

Energy-Heat
(Read pp. 73 & 74 Blue Book)
1 Energy is the...
2 If a change occurs, then work has been done.
3 For all changes to occur, energy is required.
4 Stopping a vehicle requires energy.
5 Energy is never...
6 Energy can only be...
7 Energy of motion is transformed to the energy of heat by brakes of a vehicle.
8 Four forms of energy are...
9 Temperature is...
10 Thermal energy (heat) is...


Mysteries of Matter 1
Questions